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    • 1. 发明授权
    • SRAM cache and flash micro-controller with differential packet interface
    • 具有差分数据包接口的SRAM缓存和闪存微控制器
    • US07707354B2
    • 2010-04-27
    • US11876251
    • 2007-10-22
    • Charles C. LeeDavid Q. ChowAbraham C. MaFrank YuMing-Shiang Shen
    • Charles C. LeeDavid Q. ChowAbraham C. MaFrank YuMing-Shiang Shen
    • G06F12/00
    • G06F12/0866G06F2212/2022G06F2212/2515
    • A flash microcontroller has a Static Random-Access-Memory (SRAM) buffer that stores several blocks of boot code read from a flash memory. The SRAM buffer also operates as a cache of flash data after booting is complete. Cache read and write hits use the SRAM cache rather than flash memory, while old cache lines and read misses access the flash memory. Both the external host and the microcontroller are booted from boot code buffered in the SRAM buffer. A boot-loader state machine reads the flash ID and programs flash parameter registers with timing parameters for the flash memory. The flash microcontroller uses a differential interface to the external host, with a differential transceiver and a differential serial interface. Frame, packet, and encoded clock processing is also performed by the serial interface.
    • 闪存微控制器具有静态随机存取存储器(SRAM)缓冲器,其存储从闪存读取的几个引导代码块。 引导完成后,SRAM缓冲区还可以作为闪存数据缓存。 缓存读取和写入命中使用SRAM缓存而不是闪存,而旧的缓存行和读取未命中访问闪存。 外部主机和微控制器均由缓冲在SRAM缓冲区中的引导代码引导。 引导加载器状态机读取闪存ID,并使用Flash存储器的时序参数对闪存参数寄存器进行编程。 闪存单片机使用与外部主机的差分接口,具有差分收发器和差分串行接口。 帧,分组和编码时钟处理也由串行接口执行。
    • 4. 发明授权
    • Flash micro-controller with shadow boot-loader SRAM for dual-device booting of micro-controller and host
    • 闪存微控制器带有引导加载器的SRAM,用于微控制器和主机的双设备启动
    • US07761653B2
    • 2010-07-20
    • US11875648
    • 2007-10-19
    • Charles C. LeeDavid Q. ChowAbraham C. MaFrank YuMing-Shiang Shen
    • Charles C. LeeDavid Q. ChowAbraham C. MaFrank YuMing-Shiang Shen
    • G06F12/00
    • G06F9/441
    • A flash microcontroller has a Static Random-Access-Memory (SRAM) buffer that stores several blocks of boot code read from a flash memory. The boot code includes an initial boot loader, boot code and a control program that are executed by the flash microcontroller, and an operating system OS image and an external-host control program that are executed by an external host. Both the external host and the microcontroller are booted from boot code buffered in the SRAM buffer. A first-reset-read address from the external host is captured by the microcontroller during its boot sequence and stored in a mapping table along with a physical address of the block in the SRAM buffer with the operating system OS image and the external-host control program. A boot-loader state machine reads the flash ID and programs flash parameter registers with timing parameters for the flash memory.
    • 闪存微控制器具有静态随机存取存储器(SRAM)缓冲器,其存储从闪存读取的几个引导代码块。 引导代码包括由闪存微控制器执行的初始引导加载程序,引导代码和控制程序,以及由外部主机执行的操作系统OS映像和外部主机控制程序。 外部主机和微控制器均由缓冲在SRAM缓冲区中的引导代码引导。 微控制器在其引导序列期间捕获来自外部主机的第一复位读取地址,并将其与SRAM缓冲器中具有操作系统OS映像和外部主机控制的块的物理地址一起存储在映射表中 程序。 引导加载器状态机读取闪存ID,并使用Flash存储器的时序参数对闪存参数寄存器进行编程。
    • 6. 发明授权
    • Chained DMA for low-power extended USB flash device without polling
    • 用于低功耗扩展USB闪存设备的链接DMA,无轮询
    • US07707321B2
    • 2010-04-27
    • US11928124
    • 2007-10-30
    • Charles C. LeeDavid Q. ChowAbraham C. MaFrank YuMing-Shiang ShenHorng-Yee Chou
    • Charles C. LeeDavid Q. ChowAbraham C. MaFrank YuMing-Shiang ShenHorng-Yee Chou
    • G06F3/00G06F13/38
    • G06F13/28Y02D10/14
    • An extended Universal-Serial Bus (EUSB) host has reduced loading by using radio frequency (RF) transceivers or direct wiring traces rather than a pair of legacy USB cables. The reduced loading opens the eye pattern. The EUSB device transfers internal data using chained Direct-Memory Access (DMA). Registers in a DMA controller point to a vector table that has vector entries, each pointing to a destination and a source. The source is a memory table for a memory group. The memory table has entries for several memory segments. Each memory-table entry has a pointer to a memory segment and a byte count for the segment. Once all bytes in the segment are transferred, a flag in the entry indicates when another memory segment follows within the memory group. When an END flag is read, then vector table is advanced to the next vector entry, and another memory group of memory segments processed.
    • 扩展的通用串行总线(EUSB)主机通过使用射频(RF)收发器或直接布线轨迹而不是一对传统的USB电缆减少了负载。 减少负荷打开眼睛图案。 EUSB设备使用链接的直接内存访问(DMA)传输内部数据。 DMA控制器中的寄存器指向具有向量条目的向量表,每个向量表指向一个目的地和一个源。 源是内存组的内存表。 内存表有几个内存段的条目。 每个存储表条目具有指向存储器段的指针和段的字节计数。 一旦片段中的所有字节都被传送,该条目中的标志表示在存储器组中跟随其他内存段的时间。 读取END标志时,向量表前进到下一个向量条目,并处理另一个内存段的内存组。